Scientists from the Hawaii Biological Survey and Bishop Museum provide this online guide to Hawaii's invasive marine species. Although brief, the guide focuses on the most common introduced species with the hope that it will educate individuals about the threats posed by introduced species and encourage them to report occurrences of other unknown species. The Invertebrates section can be navigated through a species list of scientific names, or by viewing groups of photos. Each species has a page that includes description and habitat information, as well as photos of other similar organisms. Not as easy to navigate, the Algae section is hosted by the University of Hawaii. The entire Invertebrate section or individual species pages can be downloaded in Adobe Acrobat (.pdf) format.